Source : Webster's Revised Unabridged Dictionary (1913)

Mirror \Mir"ror\, n. [OE. mirour, F. miroir, OF. also mireor,
   fr. (assumed) LL. miratorium, fr. mirare to look at, L.
   mirari to wonder. See {Marvel}, and cf. {Miracle},
   {Mirador}.]
   1. A looking-glass or a speculum; any glass or polished
      substance that forms images by the reflection of rays of
      light.

            And in her hand she held a mirror bright, Wherein
            her face she often view[`e]d fair.    --Spenser.

   2. That which gives a true representation, or in which a true
      image may be seen; hence, a pattern; an exemplar.

            She is mirour of all courtesy.        --Chaucer.

            O goddess, heavenly bright, Mirror of grace and
            majesty divine.                       --Spenser.

   3. (Zo["o]l.) See {Speculum}.

   {Mirror carp} (Zo["o]l.), a domesticated variety of the carp,
      having only three or fur rows of very large scales side.
      

   {Mirror plate}.
      (a) A flat glass mirror without a frame.
      (b) Flat glass used for making mirrors.

   {Mirror writing}, a manner or form of backward writing,
      making manuscript resembling in slant and order of letters
      the reflection of ordinary writing in a mirror. The
      substitution of this manner of writing for the common
      manner is a symptom of some kinds of nervous disease.